Kusmiyati, K., Waangsir, F.W.F., Mauguru, E.M. and Tokan, M.K. 2022. Bacteriological quality and environment risk of water pollution of dug wells on Semau Island, Indonesia. International journal of health sciences. 6, S9 (Aug. 2022), 732–746. DOI:https://doi.org/10.53730/ijhs.v6nS9.12324.